Massac County RainfallUnited StatesILMassac County40%Metropolis 40% Chance 45%Brookport 45% Chance 40%Mermet Lake 40% Chance Big BayBoazBrookportCretaceous Hills Nature PreserveFort Massac State ParkHillermanJoppaMassac Forest Nature PreserveMermetMermet LakeMetropolisMetropolis Municipal AirportNew ColumbiaRound KnobSamothShady GroveUnionville